Apparatus for grinding tools



Dec.- 8, 1931. F. sATTERs'fRoM L834972 APPARATUS FOR GRINDING TOOLS Filed Feb. 23, 192,7 4 SheetsSheet l Dec. s, 1931. l F. SATTERSTRQ'M 1,834,972'

APPARATUS FOR GRINDING TOOLS Filed Feb. 23. 1927 4 Sheets-Sheet 2 fEKD/A/ANQJZTTEHSWM TTORNSKT Dec- 8, -1931- F. sATTERsTRoM ARRATUS FOR GRINDING TooLs.

Filed Feb. 23, 1927 4 Sheets-Sheet 3 fawn/off @E0/NAND Jhrfes man TTokNEYs' Dec. 8, 1931. F. 'sA-rTERsTRoM APPARATUS lFOR GRINDING TOOLS 4 Sheets-Sheet 4 Filed Feb.` 23, 1927 f'E/Pp//vA/vo .5A Trfwreom ATTORNEY:

Patented Dec. 8, 1931 AUNITED STATES PATENT OFFICE FERDINAND sATTERsTItOM, or FARIBAULT, MINNESOTA, AssIGNOn To THE SPIRAL vGUTTER, COMPANY, OF FARIBAUIJT, MINNESOTA, A CORPORATION or MINNESOTA APPARATUS FOR GR-INDING TOOLS This .invention relates to new and useful improvements in grinding apparatus `and more particularly to such apparatus adapted for'use to grind or sharpen the blades of spiral cutter-heads. i

f In object of the inventionis to provide means in connection with such an apparatus for relatively rotating the work or cutterhead with respect to the grinder-wheel so that thecutting edges Nof the blades ythereof will be accurately ground lto the same angle, thus insuring a smooth cutof the cutter-head when in operation.

A further object of the invention is to provide an apparatus for grinding the blades of cutter-heads of the type shown in Patent #1,432,792, granted to F. Schimmel, said apparatus having means adapted to engage the radial wall of one of the guide channels therein to accurately guide androtatethecutter-head `with respect tothegrinder-Wheel, asthe cutter-head is longitudinally moved back and forth with one of its-blades in grinding engagement with the grinder wheel, thus insuring that each blade of a cutter-head will be ground to exactly the same cutting angle. K r v A further object is to provide a guide for thev cutter-head having an adjustable Support whereby it may readily and quickly be adjusted to guide'either a right or a left hand spiral cutter. Y

Features of the invention reside in thegeneral mountingof the guide means for guiding the cutter-head with respect to the periphery of the grinder-Wheel; the. adjustability of such guide means; the particular mounting of the grinder-wheelwhich is such that the wheel may readily and quickly be adjusted to suit various sizes of'cutter heads, and by the adjustment of which Vthe cutting angles of the blades lnay also be varied, as desired, and, in the Vgeneral construction of the grinder, as a whole, which, it will be'seen, is very simple and comprises few moving parts. n y

Other objects of the inventionwill appear from the following description and accompanying drawings and will be pointed out in the annexed claims.

In vthe accompanying drawings there has been disclosed a structure designed to carry out theyarious objects of the invention, but it is to be understood that the invention is not confined to the exact features shown as various changes may be made within the scope of the claims which follow. i

In the accompanying drawings forming partof this speciiication:

Figure 1 is a vertical sectional view on the line 1 1 of Figure 2;

Figure 2 is a plan view of Figure 1;

Figure 3 is a front elevation of Figure 2;

. Figure 4 is an enlarged detailed sectional View showing the means for guiding the cutter-head with respect to the grinder-wheel;

Figure 5 is a detailed sectional View on the line 5 5 of Figure 4;

,Y Figure 6 is an enlarged detailed sectional view on the., line 6 6 ofy Figure 1, showing the means provided for changing the angle of the guide-head whereby it may be used to guide either a right or a left-hand cutter,- head;

Figure 7 is a detailed sectional viewon the line 7 7 of Figure 6;

Figure 8 is a detailed sectional View of the lower portion ofthe guide-head, showing the yieldably mounted blade'provided therein;

Figure 9 is a detailed sectional View showing the supporting means for the grinderwheel;

y Figure 10 is a view showing a modified form of guide;A l

Figure 11 is a detailed sectional View on the line 1l 11 of Figure 10;

Figure 12 is a View showing another modified form of guide;

Figure 13 is a plan view of a grinder adapted for use to grind comparatively long cutter-heads which cannot be longitudinally moved upon their supporting spindles; and

Figure 14 is avertical sectional view on the line 14 14 of Figure 13.

The novel grinding apparatus featured in this invention comprises a base member 21 having bearings 22l and 23 mounted thereon for supporting a spindle or shaft y24, upon which the cutter-head or work 25 is adapted to be slidablyand rotatably mounted. An

larged portion 32 against which a ball-bean..v ingv 33 .is seated.. Agsiinilar ball-bearing 34, is mountefduponthe'stud 3l adjacent 'the' outer `end thereof, andy 'is 'arranged thereon substantially in alignment Aiv-itlra -pulley 3 5,

*terminally secured to a flanged sleeveBG by suoli meansv as threads-237; :The groovedy pul-v ley 35 has a central portion 3S which prefer? ably is squared 'soi that thev Qpulley' may be Y tightened against the grinder- Wheel 29 which,

it'u'fill'be not,edf by reference toY Figure 9, is clam-pecl between ythe flange" 39 of the sleeve Y 36v andtheinnerface yof the grooved pulley 35. The innerjball-bearingl 33is arrangedin alignment yv'iththe jgri'nder'wheel" 29 as Y i;l*1o'\vn..f4 Suitable'packingsdlare provided adjacent each ball-bearingI yto prevent oilleak-v 'therefroini "Thes'tjudl'is also provided .with a flange42v and next to this flangeis a threaded portion fill?)vr adapted"fto receive a Wheel-'guard s44C', vu'lliich -overhangs the vgrinding-'Wheel 2 9an'd partially conceals it, as shown iii Figure l'.` `The stud 3lhas'a`thread'- ed ektension '45 adapted to* pass' ythrough an arcuately formed slot or 1 aperture 46 provided in av Web 47, preferablyVV integrally formed-jivitlilthei'bracket26,2as also shown in Figure l. zcap screvvllSpasses' through an fitsjinner' threaded portion"received'fin a threaded socket provided" inthe Wheel-guard fla, as shown in Figure 2. This cap screvvlS tprovidesa pivotalconnection between 'the Wheel-guard and the bracket126; iA Wing n'u't 51j is terminally mounted upon the Vthreaded extension 45"'o'i'fthe jstudl', andprovides Y airisfofthe vcutter-'head'25. f ("Seel Figure l.) Y

' 'thereforef'the"grin'dingiwheel in adjusted position'sfe This adjustment providesv lmeans for :movinggthe grinding-Wheel to and from the vA motor 52 has a bracket 53 secured'thereto,

vvhiic'hinfturnfis adjustably 'secured'to the slide 27 byvmeans Ao'ffa'ca'p screw-54'." vThe bracket''53 is-slottedias shovvn'in Figure 2, so that the motor may berelatively moved, with* respectuto thegrinding-Wheel 29 `for the 55,operatively connecting the motor Ywith the grindingeivheeli An adjustingscrew l56 has'one en'drecelved in threaded engagement With `the slide 27 and"ha'sitsouter portion rotatably' mounted lin 'a bracket :57, suitably secured toy the `baise' `member 21, vas shown 'in tion of the slide 27 uponthe base member 2l. A suitable hand Wheel 6l isterminally secured to the adjusting screw 56 to provide means for rotating the latter From the vforegoing, it Will be noted that the slide 27,

carrying-the motor 52 andf-t'hefbraclget upon ywhich the grindingwvheel-29 is mounted, may

v-f towards: thecutterfhead. By thus adjustably mounting the bracket 26upon'tlie base member 21 andby the-adjustable lmounting of thegrinding-Wheel upon V- the f bracket 26,-v the grinding-Wheel may be wquicklyf'adj usted tog the desired! position required forfgrinding the blades 62 of a given cutter-headffi l An* importantfeature-of this f invention resides 'in the novel Jmeans provided A.for relatively! rotating the cutter-head :upon the `spindle 24;,11W-hen the cutter-head iis lon-gi'- tu-dinally :moved back and 4forth upon the spindle, during 'the `bladesharpening or grinding operatiom f Thisiapparatu's is.l particularly designed for use togri-nd the blades of spiral cutter-heads suchV asl lthe'ltype set forth the ab'o've menti'onedipatent, and also as'sh'own' in Figure; 5 fof thepresent 'application. It'vvill readily beun'derstood that to 'another-andWithfr'espect-tothe-axis of the rangement of the blades in the periphery oi"- 'the cutter-heach'fitis necessarythat'the:cutterli'ead be rela-tively rotated uponthe spindle 2li,

during the reciprocalmovementofthe cutter# h'ead 25 when ingrindingl engagement jivitli the grinder Wheel 29. Tl'1e means' provided vfor thusguidingy and rotating the'cuttereliead'as' it viSv-movedv back- 7 'Wardly and'viz'or'tvardlyvuponl the spindle* 24 i With one oflits blades in grinding engagement withv the peripheryA of the `Wheelv 29, #consists of a 'guide-,head' having straiglitf'edge portion' 64 providefdffthereon adajitedto" engage the WallsV y65 lof the clearance 'channels or-grooves v66', shwnin Figuresv "fl andy 4. iT-hes'ef grooves" are common-y in the V"construction of' `the cutterf-'head 'fandf haveV the' "dual function'of providing clearance for' the chips r'removedfrom thefwor-k r-and also as a means adapted to co-operatewith otherineans #for guiding the cutter-head jwith respect the i: The lguide-head"263 is preferablyshaped"as shown in Figure 4, and has"a"springatuated "21' t means of wedge-shaped clamping v and cap screws 7l, as shown inFigu'reef.

not vary with respect to the periphery of the Ygrinding-wheel 29 for a given setting ot the various parts.

The blades G2 et the cutterhead are adpistably secured to the' head by blocks G9l The guide-head 63 has a shank 72J received in asocketf''l provided in a supporting member 7 4, having a cylindrical extension 75 w iich is terminally threaded and received in anarm or link 76, as shown in Figure 6. 5A clampingV member 77 is bored to receive the extension 7 5 and has one end adapted to engage the arm 76 and its other end 'adapted to sists in arranging shown in Figure' will be arrang engage theshank 72 ott-he'guide-head 68 as 6 and 7 Q' ly thus mounting the clamping member 77 upon the extension 7 5 et thesupporting member' 74, it will readily be noted that when the nut 78 is rotated `upon the extensionl 7 5, that the shank 2 will be securely clamped by the supporting member ifi and the clamping member 77. The above clamping means also permits the shank 72, and therefore the guide-head 63, to be vertically adjusted therein with respect to the cutter-head; The-arm 76,'to which the guide-head 68' is adjustably secured, is yprovided with an elongated opening or slot 79adapted to'receive one end ot a clamping screw 8l, terminally mounted in a bracket 82 secured to 'the baeemember 2l, as shown in Figures 2 and f The adjustable mounting of thearm 7 6 upon-the bracket 82 provides means lfor further adjusting 'the guide-head with respect Ato the cutter. There'- fore, by means of the slot' 79 in *connection with the ac'ustable mounting of the guidehead 68 upon the arm 7 6, the guide-head may beuniversally adjustedvwith respect to the cutter-head so that it may be accommodated to practically all sizes and shapes of cutterhcads Within a reasonable limit, ot course.

Another feature of the guide-head supporting means is shown in Figure 6 and conthe socket 7.3.at an angle in', the supporting member 74 so that the shank 72 o'lthc guide-head may be arranged at a slight incline withrespect 1tothe axis of the stud 7 5. |This is essential iii-order that the straight edge or Jface 64 of the guide-head ed substantially parallel to the cutting-edge of the blade`62 ot the cutterh'ead, during the grinding operation. As a result ot the spiral mounting` of the blade 62 in the cutter-head,`the cutting edges thereof are not parallel to the axis of the cutterhead orl the supporting spindle 24. The axis of the socket 7 3 is therefore arranged at an angle with 'respect to the axis of the extension of the support, so as to compensate for the spiral mounting of' the blades (52 in the cutter-head. The supporting means for the cutter-head is so arranged that it may be used for grinding either right or left hand spiral cutters. T he liull line position shown in Figure G illustrates the guide-head as arranged whcn ,used for guiding right hand spiral cutters, and the dotted line position indicates the position assumed when used to guide left hand spiral cutters. The two above described positions are obtained by merely reversing thefposition of the guide-head supporting means.' That is, when it is desired to adjust the guide-head from the full to the dotted line position shown in Figure 6, the shank 72 will be withdrawn from the socket 73 and the clamping means, including the members 74 and 77, will be rotated a halt revolution in the arm 76, after which the shank 72 will be inserted into the socket 7 3 of the guide-head 7 et. The guide-head will then assume the dotted line position shown in Figure 6. The opposite end portions 83 and 84 of the guide-head are preferably rounded, as shown in Figures 5 and 6, so as to readily enter the channels or grooves GG, during the reciprocal movement et the cutter-head upon the spindle24 when the blades are being ground or sharpened.

Figures l() and 'l1 illustrate a modified form of guide-head wherein a flattened member 85 is secured to the shank 72 and has a iexible or yieldable member 86 secured thereto adapted to engage one side of a tongue or rib 87 provided upon the cutter-head 88. This Jform ot' guide-head functions in a manner similar' to that shown and described in the previous vfigures, but instead of the guide-head having means engageable With the cutter-head blade 62 to retain the guide wall 89 in constant engagement withthe guide-head, the flexible member 86 is provided which, it will be noted by reference to Figures 10 and 1l, is adapted to engage the rear wall of the longitudinal guide rib 87, provided upon this form ot Acutter-head. The opposite end portions of the cutter-head 85 are rounded as shown at 91, and the end portions of the flexible niember 3G are outwardly turned as indicated at 92, so that the rib 87 will readily enter between the guide-head and member' 86, when moving the cutter-head back and forth upon 'the spindle 2l during the grinding operation.

Figure l2 shows another modification oit the guide-head wherein a flexible member 93 is secured to the guide-head 94 on the side adjacent 'to the cutter-head blade 62. In the form here shown, the cutter-head is provided with a lgroove 95 having a guide wall 9G adapted to be engaged by the guide 94; as

shown. Y. Thejspringfinember 93 -ilnerelyi'unc4 tions to ,retain thewwall y96 inconstant-engagel ment lwith the guide head duriiigthe grinding operation. v Y v nFigures'13 and 14 illustrate a grinding apparatus adapted fori use to grind' theiblades of relatively long cutter-headswhichcannot readilyV be removed from their supporting spindles or longitudinally lmoved thereon. In

ing the spindle or shaft102 ot the cutter head.- A carriage 103. is movablyj-mounted upon the -j iail-97,aiid tothis carriage the vgrinder Wheel 1 04 :is mQun-tedbymeans of a bracket 105 adj-ustably secured Y to i a slide movable insuitable` guides 107;'provided in the carriage. 103. A motor 108 is alsomount'-A edupon'the slidei106 raiidfis adjustable thereonlto' Lvary the tension of the drive-belt109 operatively connecting the motor with the .grinding Wheel* 104. j An adjustingiscrew 111 is mounted in a lug 112 provided-at the ,uppery pertion of the slide 10.6 and yhas a hand Wheel 118 whereby the s lidel106 may be vertically adjusted in thecarriage103 to: relativelyach just thcposition `of the grinding `Wheel 104 Witlrrespect to-,thezblades 114 of thefcutterhead 98.v A guide head.115isradjustably sefeo cally any.desired `angle.

' cured to a depending membery 116 secured to the bracket 105'by suitable :bolts 117. Acap screw-` 118 is provided-for securing theguideV head to a dependinginember 116, shown in Figure 14. The 4slide v106Y isisecuredto the carriagelOSby .means of a clamping bar 119 as shown in yFigure'V 13.; .t f. Y .1n the operation ofthel grinding apparatus shown in Figures 18 and.14, 4thecutterY .head 98 is not vremoved froinits .drive spindle102, but the spindle 102is released from .itsfdriv-V ing mechanism or permitted to freely rotate, so thatl when the carriage103 iszniovedback and forth upon the rail 97, the vguide'fhead 115v will rotate the cutterhead-QS-.as the grind-4 ing Wheelfis moved back and forth, thereby accurately grindingor sliarpeningthe cutting edgesv of the blades inv a manner-,similar to that shown ,and described-,With,reference to Figures 1,2 and 3.

F rom the foregoing therefore, itv Will readily-*be seen that the noveLgrindingapparatus Yfeatured inthis invention. isadapted for use to grind It Amay also be utilized'for Ygrinding cutters wherein the blades arearranged .parallelito the axis of Vthe cutter-head.. The mounting of the grinding Whee'lis such that the cutting edges of' the blades may vbe' ground atv practi- Also, vby means:` of the yieldable means provided in` the gu-ide head 63, the blade' Willalivays be retainediin constant uniform. engagement With ,theV pe- 106 f vertically said grinding Wheel, an l. member adapted to engage a radial Wall of practically all types ofspiral cutters.

y riphery .-oI" the; grinding .Whe'el for :each setting, thereby insuring thatall of 'they blades of agivencutter head will be uniformlyaandaccurately; ground With respect l to the aX-is thereof. i Y

V:I clai-inias'my invention:

l1.111 .an yapparatus for Vgrindingcutter heads, blades and-fa longitudinallyy extending guide ton-gue or rib adjacent to eacliA blade, the combination of a support for the cutter head, a

grinding Wheeha eutterguide member adapt- -ed to engage av-wall Aof one yof said guide tongues, and .a vyieldable element supported on saidfguide mem-ber and adapted to engage theA oj'apo-s-itelrvrvall of; said guide tongue vand Vhold,said-guide memberi-n contact With/said tongue .to' prevent Aback dash, andl kwhereby each cutter blade may be accurately ground. 2. In an apparatus Vfor grinding cutters, eachfvlia'ving a plurality .of cutter blades and la):longitudinally extending guide tongue or rib adjacent to each Vblade and spaced therefrom, the combination of a ysupportfor the cutter,:agrinding Wheel, a. guide member adapted to engageone Wall of the guide tongueadjacent. to the blade being ground,

-aiidi'yi'eldable means secured to lsaid gui-de ineinberfand engaging the opposite. Wall of said .guide -tongue and respect to the wheel.

A3.1.11 van each. having aplurality of cutter blades and a longitudinally extending guide tongue lor rib inthe periphery of fsaidcutter adjacent to eaelicutter blade and kspaced therefrom, the combination of a support for thejcutter, a grinding wheel, anv adjustable su-pportfor fadjustable guide periphery f of the grinding thegui'de .tongueadjacent to the blade being ground, and aflexible member being secured tosaid guide member and engaging the opposed radialwall of saidV guide tongue and cofoperating With saidguide member to re tainthe cutting edge ofthe blade being ground, in' true grinding relation With respect totheV periphery of the, grinding Wheel. l'

4. In an apparatusfforgrinding cutters, eachhaving'a, plurality .ofcutter blades and a longitudinally extending guide tongue or rib in theperiphery of said cutter adjacent to each cutter blade and'spaced therefrom, the combination of a supportfor th-e cutter, a grinding Wheel, an adjustable support for said grinding avheel, -an adjustable guide memberwadaptedto engage a'radialWall of theguidetongue Vadjacent to the blade being ground, and a flexible member being secured tov said guilde .member,and-engaging the opposed radialWall 4olf-said guide tongue and cofoperating kWith said -gui-de mem-ber to rep co-operating VWith saidguide member. to retain the cutting edge of said blade in true grinding relation With apparatus for grinding cutters,

each `having `a `plurality f of cutter tain the cutting edge of the blade being ground, in true grinding relation with respect to the periphery of the grinding wheel, said guide member being mounted for univerf sal adjustment.

5. ln an apparatus lor grinding spiral eutter heads, each having a plurality ot blades and a guide tongue or rib adjacent to each blade and spaced` therefrom, the combination of a support adapted slidably to receive the cutter head, a. grinding wheel, a cutter guide membei` adapted to engage a radial wall of one of said guide tongues, and a lexible member mounted upon said guide member and adapted to engage the opposite Wall of said guide tongue and cooperating with said guide member to yielda-bly grip said guide tongue and to accurately guide and relatively rotate the cutter head, when said cutter head is axially moved upon said spindle whereby the spiral cutting edge of the blade being ground will be accurately held in grinding contact with the periphery ol the grinding wheel.

6. ln an apparatus for grinding spiral cutters, each comprising a plurality ot cutter blades and having a longitudinally extending guide tongue or rib adjacent to each blade and spaced therefrom, the combination of a base member, a spindle mounted upon said base member and adapted to slidably support the cutter, a bracket on the base member, a grinding wheel adjustably mounted thereon, a guide member adjustably secured to said bracket and adapted to engage a radial wall ot the guide tongue adjacent to the blade being ground, and a flexible member secured to said guide member and engageable with the opposite wall of said tongue and cooperable with said guide member to rotate the cutter, when the latter is longitudinally moved upon said support, to retain the cutting edge ol? the blade being ground in true grinding relation with the periphery of the grinding wheel.

7. In an apparatus for grinding spiral cutters, each having a plurality of blades and having a guide tongue adjacent to each cutter blade and spaced therefrom, the combination et a spindle having a relatively fixed support and being adapted slidably to support a cutter, a grinding wheel adjustable to and from said spindle, a bracket for supporting said grinding whee-l, an arm adjustable en said bracket, l and a guide means mounted on said arm and including cooperating members adapted to yieldably grip said guide tongue adjacent to the blade being ground, whereby said cutter will be relatively rotated upon said spindle, when longitudinally moved thereon, to accurately guide said cutter with respect to said grinding wheel.

8. ln an apparatus for grinding spiral cutters, each having spiral cutter blades and having a spiral guide means adjacent to each means and to rotate and guide saidcutter with respect to said grinding Wheel, when the cutter-is longitudinally moved upon said spindle, said guide member retaining the cutting edge of the cutter blade being ground, in true grinding relation with respect to the periphery ofV theA grinding wheel, and said flexible member preventing backlash or play of ythe cutter with respect to the grinding wheel.

Y 9. In an apparatus for grinding spiral eutters,reach having a plurality of spiral blades and a. longitudinally extending guide means adjacent to each blade, the combination of a spindle adapted slidably to support a cutter, agrinding wheel, aysupportfor the grindi ing wheel, a clamping means adjustably secured to said support, a guide member adjustably mounted on said clamping means, a flexible member secured to said guide member and cooperating therewith to engage said guide means and to guide and relatively rotate the cutter, when the latter is axially moved upon said spindle, said guide member being mounted for universal adjustment,

whereby it may be positioned for guiding either right or left hand cutters.

l0. In an apparatus for grinding spiral cutters, each having a plurality of spiral cutter blades and a longitudinally extending guide means adjacent to each blade, the combination of a spindle adapted to slidably support the cutter head to be ground, a grinding wheel, a supporting bracket therefor, a clamping member adjustably mounted on said bracket, a socket in said clamping member, a guide member having a shank adapted to be adjustably secured 1n said socket, said guide member being adapted to engage the guide means in the periphery of said cutter and relatively rotate and guide the cutter on said spindle without back lash, when the cutter is axially moved thereon, and the socket in said clamping member being arranged at an angle with respect to a line drawn at right angles to the axis of said clamping member whereby, when said clamping member is in one position, said guide member may be positioned thereon to guide a right hand spiral cutter, and when said clamping member is inverted with respect to said supporting bracket, said guide member may be positioned to guide a left cutter.

11. In an apparatus for grinding spiral cutters, each having a plurality of spiral cutter blades and a longitudinally extending i Leslim gui-de means :adjacent to each bla-deg 611e com- 'binatienfof spiirdle vadapted -sli-dably to 's'upportgalcuttry agridingfwhee a supporting' =bracket"ther'efr,l a Iiiik' f a'djustabiy "5 Se'ered t Said'brac'ket, a, Clamping-member termially ls'ecured 'to saidllink, a soeketfiny seid elmpingmember, 'aj lguide member vhavi`1 ig-'a;shank"adaptedo be adjustably 'se-v curel in saidsockejtfsai'd guide memberbew ing adpedftfo engage the guide mean in the periphery fof-said .Cutter and to relatively l rbtate'ndgu'ide saideutter Without'pl'y, when :the latter' is`- axially -movedi upon- 'said v spindle, evnd'thesocket in Vsaid Clamping` 15 memberbei/Iigarranged'at yn incline jvv'here-y by," Wiienfsaidvl clam-ping member is-in. one pesi-tien;- saidV guidejmember Willv be posi# tionedfo guidev al righiy hand spiral cutter, and when said clamping member is inverted 20 with respect to said link, said guide member v maybe positie' ed tofguide andi-Otfrte 'a leffi ha-ndeutter.

1111l Witnessv'whereof, I4 havehereunfco set my haiid'this 17 day'fFebruary,1927; 25 j EERDIN SAT-TERS'IR(3M.y 

